Suppose approximately 75% of all marketing personnel are extroverts, whereas about 55%of all computer programmers are introverts. (Round your answers to three decimal places.)(a) At a meeting of 15 marketing personnel, what is the probability that 10 or moreare extroverts?What is the probability that 5 or more are extroverts?What is the probability that all are extroverts?(b) In a group of 4 computer programmers, what is the probability that none areintroverts?What is the probability that 2 or more are introverts?What is the probability that all are introverts?

75% of all marketing personnel are extroverts. 55% of all computer programmers are introverts.

Answered: Suppose approximately 75% of all…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose approximately 80% of all marketing personnel are extroverts, whereas about 55% of all computer programmers are introverts. (For each answer, enter a number. Round your answers to three decimal places.) (a) At a meeting of 15 marketing personnel, what is the probability that 10 or more are extroverts? What is the probability that 5 or more are extroverts? What is the probability that all are extroverts? (b) In a group of 5 computer programmers, what is the probability that none are introverts? What is the probability that 3 or more are introverts? What is the probability that all are introverts?
Suppose 33.3% of high school students eat pizza and 42% drink soda. If 17.3% of high school students eat pizza and drink soda, what is the probability that a randomly chosen high student will either eat pizza, drink soda, or both?
The management of marks department store estimates that approximately 6% of all shoppers shoplift. Of those people who shoplift, 98% are stopped by security. Of the other 94% of the shoppers, 1% are mistakenly identified as shoplifters by security. If a shopper is detained by security, what is the probability that the person was in fact a shoplifter?
Naval intelligence reports that 66 enemy vessels in a fleet of 22 are carrying nuclear weapons. If 99 vessels are randomly targeted and destroyed, what is the probability that at least 55 vessels transporting nuclear weapons were destroyed? Express your answer as a fraction or a decimal number rounded to four decimal places.
A baseball player has a batting average of .211 (in other words, he gets a hit 21.1 % of the time that he goes up to bat). If he goes up to bat 13 times, what is the probability that he will get exactly 4 hits?
Approximately 29% of people are left-handed. If two people are selected at random, what is the probability that at least one is right-handed? Approximately 29% of people are left-handed. If two people are selected at random, what is the probability that one is right-handed and the other is left-handed? (Round your answer to 4 decimal places.)
Suppose approximately 75% of all marketing personnel are extroverts, whereas about 65% of all computer programmers are introverts. What is the probability that 2 or more are introverts? What is the probability that all are introverts?
An insurance company considers that people can be split in two groups : those who are likely to have accidents and those who are not. Statistics show that a person who is likely to have an accident has probability 0.4 to have one over a year; this probability is only 0.2 for a person who is not likely to have an accident. We assume that 30% of the population is likely to have an accident. (a) What is the probability that a new customer has an accident over the first year of his contract? (b) A new customer has an accident during the first year of his contract. What is the probability that he belongs to the group likely to have an accident? Ans: (a- 0.26, b- 0.46)
A Yale Daily found that 49 percent of students identified themselves as liberal, 15 percent as conservative, and 36 percent as moderate. In addition, 2% of Yale Students are enrolled at the School of the Environment. Does this mean that that .15*.02=.003 or 0.3% of Yale students are Conservative Environmentalists? Explain using probability terms.
Suppose that historically, 35% of applicants that are offered admittance to Texas Tech actually enroll, while the others take offers somewhere else. If Texas Tech will accept 9000 this coming year, what is the probability that less than 34.1654% will actually enroll?

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